The first self-propelled combine harvester from Munktell was the MST-92, introduced in 1951. The cutting width was 9 feet, as in most other BM combines. The engine was a Volvo Penta 6-cylinder gasoline side-valve engine with a power output of 65 hp. The driving speed was changed using Volvo's 5-speed gearbox, as there was no variator. The threshing drum width was 110 cm and it had three rasp bars. There were four speed options for the threshing drum, of which 430 and 520 rpm probably saw little use. The cutting platform did not have a separate clutch; it operated whenever the threshing mechanism was running. The discharge pipe was not rotatable, but had to be removed together with the bottom auger of the tank.

A couple of years later, the MST-93 was introduced with some minor updates (the most visible change was a 6-blade straw walker), and in 1954 the MST-94 followed. However, significant changes only came with the 1956 model MST-95, which had a Volvo 4.7-liter diesel engine, a driving speed variator, and larger sieves. At this stage, the color also changed to BM’s dark blue.

Bolinder-Munktell was Sweden's largest combine harvester manufacturer, and self-propelled combine harvesters had become common in Sweden faster than in other European countries. In addition, BM's combines were produced under license in France and England.

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